bbox_ls = [
    None,
    (100, 200, 300, 400),
    (110, 110, 120, 120),
    (100, 100, 200, 200),
    (101, 102, 103, 104),
    (110, 120, 130, 140),
    (100,100,101,110),
    (100,0,101,500),
    (100,100,101,110),
    ]
